To cope with the expansion of a system without reconstructing a device by synthesizing processed program information with produced EPG information based on broadcasting information and modulating the synthesized information.

When a structure that has a small chain which multiplexes broadcasting information and broadcasting materials for several channels and transmits them increases transponder, it deals with it by expanding a chain that corresponds to the transponder. A program guide system(PGS) 21 acquires information stored in a network management database(NMD) 11, a main function of the NMD 11 holds information that is supplied from a broadcasting program organization system(BDPS) 1 and although information to be held increases as transponder increases, it does not have a function which is needed for reorganization. Therefore, it copes with such expansion as expands transponder by simply increasing chains.